Many of a distributor's claims happen at the stops, not between them: A box truck backing to a dock clips a parked car, a liftgate drops onto a customer's forklift, a driver double-parks outside a counter, and a cyclist swerves into traffic. These are low-speed claims, but a route with a dozen stops a day produces a lot of chances, and they're often the pattern underwriters look for first in a distributor's loss runs.
A few route rules help with most of them. Drivers walk around before backing at any stop they don't know, use a spotter at docks where one is available and never back into an alley blind. Liftgates are inspected on a schedule, and only drivers trained on them run them. Dispatchers plan stops so a driver isn't promising four deliveries in an hour that only fits three. Put those rules in writing and send them with the route sheets.
One boundary question comes up often for building-supply routes. Our market is business delivery: a contractor's yard, shop or commercial job site. Selling to homeowners and delivering their orders to their doors is home delivery, and it isn't a market we place.